Dear Wien2k Users, While performing the Optical Properties Calculation for Cu2ZnGeS4 bulk system I have received this error. The k-points calculated by mBJ calculations are 102. When I change the value of 99999 which is the value of NKMAX in Cu2ZnGeS4.inop file to some higher number more than K points i.e say 150, then this error is observed:
Commandline: x optic -c Program input is: "" emin,emax,nbvalmax -5.00000000000000 3.00000000000000 9999 creating ust kmin,kmax -10 -10 -20 10 10 20 forrtl: severe (174): SIGSEGV, segmentation fault occurred Stack trace terminated abnormally. 78.440u 1.673s 1:20.85 99.0% 0+0k 0+0io 0pf+0w error: command /root/Wien2k_11.1/opticc optic.def failed Please suggest the required modification. Warm Regards Dr. Amit Soni Associate Professor Department of Electrical & Electronics Engg. Manipal University, Jaipur
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